Kunihito Ōbayashi is a supporting character in the film Make a Girl. He is a seventeen-year-old classmate of the protagonist, Akira Mizutamari. At the time of the story, he has recently entered into a romantic relationship and is openly enthusiastic about its positive effects on his life. He shares with Akira the idea that having a girlfriend has helped him grow and improve his abilities, framing personal relationships as a source of empowerment. This offhand remark becomes the catalyst for Akira’s decision to create an artificial girlfriend, setting the main plot in motion.

In terms of personality, Ōbayashi comes across as sociable and confident, comfortable discussing his personal experiences with others. His role is largely functional: he provides the initial inspiration that pushes Akira toward his experiment, but the film does not delve deeply into his inner world or backstory. His key relationship is with Akira, whom he addresses as a friend, and he also has an unseen girlfriend who is mentioned but never appears. The story does not explore Ōbayashi’s own personal development or assign him any exceptional skills. He is simply a normal young person navigating adolescence, whose casual boast inadvertently steers the protagonist toward a life-changing invention.